diff --git a/APPL/Shared/Common.inc b/APPL/Shared/Common.inc
index 04634dba53..94227cfe34 100644
--- a/APPL/Shared/Common.inc
+++ b/APPL/Shared/Common.inc
@@ -75,7 +75,9 @@ function tryOverrule(path)
             DEFAULT: function (naam, type, waarde)
             {
                 var v = Application("SET_" + customerId + "_" + naam);
-                if (typeof v == "undefined")
+                if (typeof v == "undefined" ||
+                    type != Application("SET_T_" + naam) ||
+                    waarde != Application("SET_" + customerId + "_" + naam))
                 {
                     Application.Lock();
                     Application("SET_" + customerId + "_" + naam) = waarde;